The weight of balloonand gas inside it is 12kN.The volume of the balloon is 1200m³.The density of air is 1.26 Kg/m³.Calculate
a) the weight it can lift
b) the acceleration as it rises

Dear Student,

Please find below the solution to the asked query:

1) Weight of the same volume of air is $W_{air}=1200\times 1.26\times 9.8=14817 \text{N}$
So upward force will be $14817-12000=2817 \text{N}$
So the balloon can lift 2187 N weight.

2) Mass of the balloon is $\frac{1200}{9.8}=1224.48 \text{kg}$
So acceleration of the balloon is $a=\frac{2817}{1224.48}=2.3 {\text{ms}}^{-2}$


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